Biology for IGCSE & O level - Gas Exchange In Humans (Section 4 - No. 44)
What is the role of the intercostal muscles in breathing? (Select all that apply)
They move the ribs.
They control the diaphragm.
They help change the volume of the chest cavity.
They filter the air.
Explanation
Intercostal muscles contract and relax, moving the rib cage to increase or decrease the chest cavity volume.
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